Welcome to Ribnet.
I'm sure lots of people will have views on the best 7-8m rib
but it will depend on what you want to use it for.
I think if you can define what sort of ribbing you want, e.g. distance cruising, family days out, watersports etc, then you can narrow down the most suitable marques / configurations somewhat.
I'd arrange test runs - with the family - if they are to rib with you - on the boats you short list & see how each one feels before making a final choice.
Some other makes that might be worth a look - in no particular order - Ribquest, Osprey, Ribcraft, Ribeye.